I will start by defining terms:
Evolution: The change in genetic composition of a population over successive generations, which may be caused by natural selection, inbreeding, hybridization, or mutation.
Creationism: a belief that life was created by the God of the bible according to Genesis.

Let's take a look at evolution.
When an antibiotic is applied to bacteria, most bacteria in the group will die. However, a few will be resistant to some types of antibiotics. After this, the remaining few will reproduce a new Generation, and all succeeding generations will be immune to the antibiotic. This is the same principle when it comes to viruses and vaccines, and insects and pesticides.

There is also The fact that we share about 96% of our genes with chimpanzees, 60% with fruitflies, 75% with mice, And about 80% with cows. This points to a common ancestor. Also, it should be noted that the percentage of difference between us and these animals corresponds PERFECTLY To how long ago our genetic lines separated.
Fossils. Oh, fossils. The simplest fossils are found in the oldest rocks, and in general older fossils are found Yo be buried deeper than the younger ones. For example we find fossils of non flowering plants buried deeper than flowering plants.

There is also the universal genetic code. Every cell on the planet Are capable of reading any piece of DNA from any life form.
This is a huge indicator for a Common ancestor.